File:Fantastic 195608.jpg|thumb|right|Silverberg's novelette "Guardian of the Crystal Gate" was the cover story in the August 1956 issue of ''Fantastic Stories''
File:Science fiction quarterly 195705.jpg|thumb|right|Silverberg's short story "Quick Freeze" took the cover of the May 1957 issue of ''Science Fiction Quarterly''
'''Robert Silverberg''' (born January 15, 1935) is a prolific American author and editor, best known for writing science fiction
. He is a multiple winner of both Hugo Award|Hugo
and Nebula Award
s, a member of the Science Fiction and Fantasy Hall of Fame
, and a SFWA Grand Master|Grand Master of SF